All-Organic High-Performance Piezoelectric Nanogenerator with Multilayer Assembled Electrospun Nanofiber Mats for Self-Powered Multifunctional Sensors,ACS Applied Materials & Interfaces

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All-Organic High-Performance Piezoelectric Nanogenerator with Multilayer Assembled Electrospun Nanofiber Mats for Self-Powered Multifunctional Sensors
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-05-04 00:00:00 , DOI: 10.1021/acsami.8b01862
Kuntal Maity ₁ , Dipankar Mandal _{1,

2}

Affiliation

Rapid development of wearable electronics, piezoelectric nanogenerator (PNG), has been paid a special attention because of its sustainable and accessible energy generation. In this context, we present a simple yet highly efficient design strategy to enhance the output performance of an all-organic PNG (OPNG) based on multilayer assembled electrospun poly(vinylidene fluoride) (PVDF) nanofiber (NF) mats where vapor-phase polymerized poly(3,4-ethylenedioxythiophene)-coated PVDF NFs are assembled as electrodes and neat PVDF NFs are utilized as an active component. In addition to the multilayer assembly, electrode compatibility and durability remain a challenging task to mitigate the primary requirements of wearable electronics. A multilayer networked three-dimensional structure integrated with a compatible electrode thereby provides enhanced output voltage and current (e.g., open-circuit voltage, V_oc ≈ 48 V, and short-circuit current, I_sc ≈ 6 μA, upon 8.3 kPa of the applied stress amplitude) with superior piezoelectric energy conversion efficiency of 66% compared to the single-mat device. Besides, OPNG also shows ultrasensitivity toward human movements such as foot strikes and walking. The weight measurement mapping is critically explored by principal component analysis that may have enormous applications in medical diagnosis to smart packaging industries. More importantly, fatigue test under continuous mechanical impact (over 6 months) shows great promise as a robust wearable mechanical energy harvester.

中文翻译：

全有机高性能压电纳米发生器，带有多层组装的静电纺纳米纤维垫，用于自供电多功能传感器

压电纳米发电机（PNG）是可穿戴电子设备的快速发展，由于其可持续和可利用的能源产生，因此受到了特别关注。在这种情况下，我们提出了一种简单而高效的设计策略，以增强基于多层组装的电纺聚偏二氟乙烯（PVDF）纳米纤维（NF）垫的全有机PNG（OPNG）的输出性能，其中气相聚合将涂覆有聚（3,4-乙撑二氧噻吩）的PVDF NF组装成电极，将纯PVDF NF用作活性成分。除了多层组件，电极的兼容性和耐用性仍然是减轻可穿戴电子设备的主要要求的一项艰巨任务。V _oc≈48 V，短路电流I _sc≈6μA（施加的应力幅度为8.3 kPa时），与单垫装置相比，压电能量转换效率高达66％。此外，OPNG还表现出对诸如脚踩和步行之类的人类动作的超敏性。重量测量映射通过主成分分析进行了严格探索，该方法可能在智能包装行业的医学诊断中具有巨大的应用前景。更重要的是，在持续的机械冲击（超过6个月）下的疲劳测试显示出作为坚固的可穿戴机械能量采集器的巨大希望。

更新日期：2018-05-04

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